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      10-16-2012, 07:16 PM   #9
HP Autosport
 
Drives: E82 1M
Join Date: Mar 2007
Location: Santa Barbara, AST, Brembo, Eibach, H&R, GIAC, Koni, Quaife, Stoptech, Vorshlag,

Posts: 10,829
iTrader: (29)

On a road course with a decent suspension and properly driven the 1 series will be fastest with the stock rear bar or no bar at all, period. 3 series will behave the same way. The only time I can see the car being faster with a larger rear bar is when really soft spring rates, LSD, wider wheel and tires or the combination of the three.
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